Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Variable | F-value | p-value |
| Antigen | 370 | <0.0001 |
| Immunoglobulin type | 239 | <0.0001 |
| 1° or 2° Infection | 362 | <0.0001 |
| Geographic origin of Sera | 3.36 | 0.0709 |
| Antigen : Immunoglobulin type | 17.7 | <0.0001 |
| Antigen : Geographic origin of Sera | 2.91 | 0.0403 |
| Antigen : 1° or 2° Infection | 30.8 | <0.0001 |
| Immunoglobulin type : 1° or 2° Infection | 118 | <0.0001 |
